@ARTICLE {AKOBUNDU:1999, title = {Influence of fallow management systems and frequency of cropping on weed growth and crop yield}, author = {Akobundu, I. and Ekeleme, F. and Chikoye, D. }, journal = {Weed Research}, year = {1999}, volume = {39}, number = {3}, pages = {241--256}, issn = {0041-3291}, }